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How Nitrous Oxide Works
science.howstuffworks.com/nitrous-oxide.htm
At the same time scientists discovered that nitrous oxide could numb agonizing pain, they also found it could make you really lightheaded and silly. Yes, huffing parties started in the 1700s.
How Telephones Work
www.howstuffworks.com/telephone.htm
Telephones are one of the most important and useful modern inventions. Learn about telephone operation, creating a telephone network and tones and bandwidth.
Remember Your School Supplies From the '50s?
play.howstuffworks.com/quiz/remember-your-school-supplies-from-the-50s
Push pins, steel pins, thumb tacks, paste sticks ... The 1950s produced school supplies that either stuck to things or stuck you back if you weren't careful. This quiz will inspire you to call up coveted school supplies from the past. How many can you correctly ID? Get ready to figure out some cool school stuff!
How Nuclear Bombs Work
science.howstuffworks.com/nuclear-bomb.htm
Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?
Which Is More Environmentally Friendly: Paper or Plastic?
science.howstuffworks.com/environmental/green-science/paper-plastic.htm
People wonder if paper or plastic bags are more environmentally friendly. Get the skinny on whether paper or plastic bags are greener.
Has Earth reached its carrying capacity?
science.howstuffworks.com/environmental/green-science/earth-carrying-capacity.htm
Carrying capacity is the idea that sustainability requires balance. Learn about carrying capacity and human population.
How the Toyota FT-HS Works
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/toyota-ft-hs.htm
The Toyota FT-HS concept car is a high-powered, sporty hybrid. Get the scoop on the Toyota FT-HS in this article.
Rev Up: The Diesel Engine Quiz
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While diesel earned itself a bad reputation for spewing soot in the early days, improvements have made it much cleaner. Test your knowledge of all things diesel with this quiz.
How Air-Conditioned Seats Work
auto.howstuffworks.com/air-conditioned-seat.htm
Have you ever been in a car with air-conditioned seats? Read about air-conditioned seats at HowStuffWorks.
How will plug-in hybrids affect the environment?
auto.howstuffworks.com/car-models/plug-in-hybrids/plug-in-hybrids-affect-the-environment.htm
How will plug-in hybrids affect the environment? Learn how plug-in hybrids could affect the environment at HowStuffWorks.